I think it’s part of their idea that everything wrong in the world comes from America, so if they topple the American capitalist system everything will be fixed.
Random acts of violence don’t fit this narrative, the fact that there will always be psychopaths by sheer fact of the genetic lottery doesn’t fit this narrative, and the downfall of left leaning public figures through no fault of their own or that of some secret cabal of the US government doesn’t fit this narrative.
The fact that bad shit will still need to be fixed and/or corrected for in a “post revolution” world just breaks their brains.
It’s Turner Diaries logic, “no see, once we get rid of them the world will be perfect!”